William Ellis Porter II (born September 21, 1969) is an American actor and singer. Porter gained notice performing on Broadway before starting a solo career as a singer and actor. For his role as Lola in Kinky Boots, Porter won the 2013 Tony Award for Best Actor in a Musical, the Drama Desk Award for Outstanding Actor in a Musical and the Outer Critics Circle Award for Outstanding Actor in a Musical. He credits the part for "cracking open" his feminine side to confront toxic masculinity. Porter also won the 2014 Grammy Award for Best Musical Theater Album for the musical's accompanying album.

Porter starred in all three seasons of the television series Pose, for which he was nominated for three Golden Globe Awards and won the 2019 Primetime Emmy Award for Outstanding Lead Actor in a Drama Series, becoming the first gay black man to be nominated and win in any lead acting category at the Primetime Emmys. In 2020, he was included on Time's list of the 100 most influential people in the world. In 2022, he won another Tony Award for Best Musical as a producer for the musical A Strange Loop.